/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the License. You may obtain a
* copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package org.apache.geode.management.internal.cli;
import java.io.IOException;
import org.apache.geode.management.internal.cli.shell.Gfsh;
/**
* Semi-complete implementation of {@link CliAroundInterceptor} for convenience for implementors.
*
*
* @since GemFire 7.0
*/
public abstract class AbstractCliAroundInterceptor implements CliAroundInterceptor {
protected enum Response {
YES("yes"), NO("no");
private String text;
private Response(String string) {
this.text = string;
}
public String toString() {
return this.text;
}
public String toUpperPrompt() {
return this.text.substring(0, 1).toUpperCase();
}
public String toLowerPrompt() {
return this.text.substring(0, 1).toLowerCase();
}
public static Response fromString(final String text) {
if (text != null) {
for (Response response : Response.values()) {
// If the whole string matches, or the input is only 1 character and it matches the
// first character of the response text, then they are considered equal.
if (text.equalsIgnoreCase(response.text)
|| ((text.length() == 1 && text.equalsIgnoreCase(response.text.substring(0, 1))))) {
return response;
}
}
}
return null;
}
}
public boolean interactionSupported() {
Gfsh gfsh = Gfsh.getCurrentInstance();
return gfsh != null && !gfsh.isQuietMode() && !gfsh.isHeadlessMode();
}
protected String interact(String message) throws IOException {
return Gfsh.getCurrentInstance().interact(message);
}
protected Response readYesNo(String message, Response defaultResponse) {
if (defaultResponse == Response.YES) {
message += " (" + Response.YES.toUpperPrompt() + "/" + Response.NO.toLowerPrompt() + "): ";
} else {
message += " (" + Response.YES.toLowerPrompt() + "/" + Response.NO.toUpperPrompt() + "): ";
}
if (!interactionSupported()) {
return defaultResponse;
}
Response response = null;
do {
try {
String userInput = interact(message);
if (isNullOrEmpty(userInput)) {
return defaultResponse;
}
response = Response.fromString(userInput);
} catch (IOException ioex) {
severe("Could not read user response", ioex);
// What can you do except try again???
}
} while (response == null);
return response;
}
protected boolean isNullOrEmpty(final String userInput) {
return userInput == null || userInput.isEmpty();
}
protected static void info(String msg, Throwable th) {
Gfsh gfsh = Gfsh.getCurrentInstance();
if (gfsh != null) {
gfsh.logInfo(msg, th);
} else {
LogWrapper.getInstance().info(msg, th);
}
}
protected static void warning(String msg, Throwable th) {
Gfsh gfsh = Gfsh.getCurrentInstance();
if (gfsh != null) {
gfsh.logWarning(msg, th);
} else {
LogWrapper.getInstance().warning(msg, th);
}
}
protected static void severe(String msg, Throwable th) {
Gfsh gfsh = Gfsh.getCurrentInstance();
if (gfsh != null) {
gfsh.logSevere(msg, th);
} else {
LogWrapper.getInstance().severe(msg, th);
}
}
}